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National Stock Number:
5855-01-180-2172
Federal Supply Class:
5855
National Item Identification Number:
011802172
Description:
RETAINER,OPTICAL ELEMENT
Detail:
A cylindrical, externally threaded item having a centrally located hole specifically designed to retain by means of either a raised box (shoulder), or counterbore, countersink, or a similar shaped recess, an optical element such as a lens, reticle, cell, and the like, in optical assemblies. It must have drilled holes or slots to facilitate assembly and disassembly. For items which house the optical element(s), and form the internal or central portions of an optical system, see CELL, OPTICAL ELEMENT. Excludes RING, EXTERNALLY THREADED.
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Manufacturer Information:
| 13075884 | 04939 | LOCKHEED MARTIN CORPORATION | | 13075884 | 58260 | PROGRAM MANAGER ADVANCED ATTACK HELICOPTER BARCOM AMCPM-AAH | | 13075884 | 9Y204 | NORMAN ENGINEERING CORPORATION |
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Techincal Specification:
| DEPTH | 0.040 INCHES NOMINAL | | DIAMETER | 2.500 INCHES NOMINAL | | DRIVE FACILITY ANGULAR SPACING IN DEG | 90.0 | | DRIVE TYPE | SLOTTED | | FLANGE DIAMETER | 2.500 INCHES NOMINAL | | GUIDE DESIGN | THREAD RELIEF | | GUIDE LOCATION | EDGE OPPOSITE DRIVE EDGE | | HOLE DIAMETER | 2.188 INCHES NOMINAL | | HOLE OR SLOT QUANTITY | 4 | | INTERNAL ANNULAR SERRATION | NOT PROVIDED | | MATERIAL | ALUMINUM ALLOY 6061 | | OVERALL LENGTH | 0.420 INCHES NOMINAL | | SETSCREW NOTCH | NOT PROVIDED | | SHOULDER LENGTH | 0.170 INCHES NOMINAL | | SHOULDER THREAD SIZE | 2.3125 IN.-40 | | STYLE DESIGNATOR | SHOULDERED | | WIDTH | 0.060 INCHES NOMINAL |
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